package com.imooc.controller;


import com.imooc.dataobject.ProductCategory;
import com.imooc.dataobject.ProductInfo;
import com.imooc.exception.SellException;
import com.imooc.form.ProductForm;
import com.imooc.service.CategoryService;
import com.imooc.service.ProductService;
import com.imooc.utils.KeyUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import javax.validation.Valid;
import java.util.List;
import java.util.Map;

@RequestMapping("/seller/product/")
@Controller
@Slf4j
public class SellProductController {

    @Autowired
    private ProductService productService;

    @Autowired
    private CategoryService categoryService;

    @GetMapping("/list")
    public ModelAndView list(@RequestParam(value = "page", defaultValue = "1") Integer page,
                             @RequestParam(value = "size", defaultValue = "10") Integer size,
                             Map<String, Object> map) {
        PageRequest request = new PageRequest(page - 1, size);

        Page<ProductInfo> productInfoPage = productService.findAll(request);
        map.put("productInfoPage", productInfoPage);
        map.put("currentPage", page);
        map.put("size", size);

        return new ModelAndView("product/list", map);
    }

    @GetMapping("/index")
    public ModelAndView index(@RequestParam(value = "productId",required = false) String productId, Map<String, Object> map) {
        if(!StringUtils.isEmpty(productId)){
            ProductInfo productInfo = productService.findOne(productId);
            map.put("productInfo",productInfo);
        }

        List<ProductCategory> productCategoryList = categoryService.findAll();
        map.put("categoryList",productCategoryList);

        return new ModelAndView("product/index", map);
    }

    @PostMapping("/save")
//    @CachePut(cacheNames = "product",key = "123")
    @CacheEvict(cacheNames = "product") // 清理缓存
    public ModelAndView save(@Valid ProductForm form, BindingResult bindingResult, Map<String, Object> map){
        if(bindingResult.hasErrors()){
            map.put("msg", bindingResult.getFieldError().getDefaultMessage());
            map.put("url", "/sell/seller/product/list");
        }
        ProductInfo productInfo = new ProductInfo();
        try {
            if(!StringUtils.isEmpty(form.getProductId())){
                productInfo = productService.findOne(form.getProductId());
            }else {
                form.setProductId(KeyUtil.genUniqueKey());
            }
            BeanUtils.copyProperties(form,productInfo);
            productService.save(productInfo);
        }catch (SellException e){
            map.put("msg", e.getMessage());
            map.put("url", "/sell/seller/product/list");
        }

        map.put("url", "/sell/seller/product/list");
        return new ModelAndView("common/success");
    }

    @GetMapping("/on_sale")
    public ModelAndView onSale(@RequestParam("productId") String productId, Map<String, Object> map) {

        try {
            productService.onSale(productId);
        } catch (SellException e) {
            log.error("[卖家端上架商品] 发生异常{}",e);
            map.put("msg", e.getMessage());
            map.put("url", "/sell/seller/product/list");
            return new ModelAndView("common/error", map);
        }

        map.put("url", "/sell/seller/product/list");
        return new ModelAndView("common/success");
    }

    @GetMapping("/off_sale")
    public ModelAndView offSale(@RequestParam("productId") String productId, Map<String, Object> map) {

        try {
            productService.offSale(productId);
        } catch (SellException e) {
            log.error("[卖家端上架商品] 发生异常{}",e);
            map.put("msg", e.getMessage());
            map.put("url", "/sell/seller/product/list");
            return new ModelAndView("common/error", map);
        }

        map.put("url", "/sell/seller/product/list");
        return new ModelAndView("common/success");
    }
}
